head to head · open source
one-api vs agent-router
one-api has 36,940 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. agent-router has 2,116 stars, 379 forks, 300 open issues and last shipped yesterday. one-api leads on adoption by 1,646% (36,940 vs 2,116 stars). one-api is written in JavaScript under MIT; agent-router is written in Go under Apache-2.0. one-api has attracted 19% as many forks as stars, agent-router 18%. agent-router was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (api-gateway), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| one-api | agent-router | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 2.1K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Go |
| Last push | 2026-01-09 | 2026-09-17 |
| Forks | ⑂ 6.9K | ⑂ 379 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick one-api if
- You weight community size — 37K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick agent-router if
- You want the agent-router feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and agent-router fits your workflow better
About one-api
One API is a self hosted LLM API management and key redistribution system that exposes many model providers through the standard OpenAI API format, aimed at developers, teams and operators who want a single endpoint, a single key model and a single quota surface across providers.
read the full one-api overview →
About agent-router
The open source control plane for AI and agent traffic, powered by Envoy. An Agentic AI Foundation project. Formerly Envoy AI Gateway . Documentation · Quickstart · Blog · Release Notes · Talks Agent Router Agent Router gives application teams one consistent, OpenAI compatible API for every model and tool, from hosted providers to self hosted inference and MCP servers. Platform teams keep credentials, routing, quotas, failover, and usage attribution in one place, enforced by Envoy and Envoy Gateway. Agent Router controls. Envoy carries. Formerly Envoy AI Gateway Envoy AI Gateway is now Agent Router , an Agentic A…
read the full agent-router overview →
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Frequently asked questions
Is one-api or agent-router more popular?
one-api has 36,940 GitHub stars and agent-router has 2,116. one-api has the larger community by that measure.
Are one-api and agent-router free?
Both are open source. one-api is licensed under MIT and agent-router under Apache-2.0. Neither carries a licence fee.
What is the difference between one-api and agent-router?
one-api is written in JavaScript and agent-router in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, one-api or agent-router?
Choose one-api if you want the larger community (36,940 stars) or its MIT licence terms. Choose agent-router if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.